Drainage pipeline structure completion on-load detection device and detection method

Abstract

The embodiment of the invention relates to the technical field of drainage pipeline detection, and discloses a drainage pipeline structure completion on-load detection device and detection method. The drainage pipeline structure completion on-load detection device comprises a main shaft and a traction ring arranged at the front end of the main shaft, the main shaft is further provided with a first detection part and a second detection part, and the first detection part and the second detection part are arranged on the front half section and the rear half section of the main shaft respectively. The first detection part comprises a first fixing ring and a plurality of first detection rods arranged in the circumferential direction, the second detection part comprises a second fixing ring and a plurality of second detection rods arranged in the circumferential direction, and the first detection rods and the second detection rods are arranged in a staggered mode in the circumferential direction; the invention further provides a detection method. The detection method comprises the drainage pipeline structure completion on-load detection device. The embodiment can be used as a preposed step of pipeline CCTV detection, normal work of the drainage pipeline is not affected, operation is simple, and the overall detection efficiency is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of drainage pipe detection, and in particular to a drainage pipe structure integrity and damage load detection device and detection method. Background Art

[0002] At present, the most commonly used method for drainage pipe inspection is pipeline CCTV (Closed Circuit Television) inspection, which is a non-destructive inspection technology that places a camera inside the pipe to record the internal conditions of the pipe. This technology usually uses a small camera that is connected to a mobile device (such as a robot or a cart) and moves along the inside of the pipe. During the inspection, the camera will capture and record the situation inside the pipe in real time, and transmit the image to the monitor of the ground operator through the closed circuit television system (CCTV) for analysis.

[0003] CCTV testing includes the following steps:

[0004] (1) Pipeline drainage and cleaning: If there is water accumulation in the pipe, it is usually necessary to drain it before CCTV inspection, especially in heavily silted or blocked pipes. Draining can help the camera better observe the wall of the pipe and its damage. Before CCTV inspection, there will often be sediment, sludge, garbage or other obstructions inside the drainage pipe. Thorough cleaning of the pipe with equipment such as high-pressure water jets and suction trucks can remove these obstructions, ensure that the camera will not be disturbed during the inspection process, and can obtain clear images.

[0005] (2) Inspection: The camera and lighting equipment are mounted on a small remotely controlled robot or cart that can travel inside the pipeline. The operator remotely controls the robot or uses a cable to push the camera into the pipeline. The camera can rotate up and down, left and right, and capture a 360° image of the inside of the pipeline. The camera transmits the image of the inside of the pipeline to a display on the ground in real time through a closed-circuit television system. The operator can monitor the situation inside the pipeline in real time and identify problems such as damage, blockage, sediment, and cracks in the pipeline.

[0006] (3) Image Recording and Analysis: The images captured by the camera during the inspection process will be recorded for further analysis by operators and engineers. By carefully examining these images, the structural integrity, functional status and need for repair of the pipeline can be evaluated.

[0007] When CCTV detection method is actually used, it has high requirements for the environment in the drainage pipe to be detected. The drainage pipe to be detected needs to be emptied and cleaned at the same time. Only after the cleaning is completed can the CCTV pipeline detection robot be placed in the drainage pipe for detection. This process is cumbersome, time-consuming, inefficient, and will also affect the normal operation of the drainage pipe. Summary of the invention

[0008] The current drainage pipe detection device is time-consuming to use, cumbersome to operate, and inefficient. In addition, the drainage pipe to be detected must be kept out of service during the detection process, which affects the daily use of the drainage pipe.

[0009] To solve the above problems, the purpose of an embodiment of the present application is to provide a drainage pipe structure damage load detection device, which includes a main shaft and a traction ring arranged at the front end of the main shaft, and a first detection part and a second detection part are also arranged on the main shaft, and the first detection part and the second detection part are respectively arranged in the front half and the rear half of the main shaft, the first detection part includes a first fixed ring and a plurality of first detection rods circumferentially arranged on the first fixed ring, each detection rod is provided with a first angle sensing device, and the first angle sensing device is used to detect the angle between the first detection rod and the vertical direction, the second detection part includes a second fixed ring and a plurality of second detection rods circumferentially arranged on the second fixed ring, each second detection rod is provided with a second angle sensing device, and the second angle sensing device is used to detect the angle between the second detection rod and the vertical direction; a main shaft angle sensing device is also provided on the main shaft, and the main shaft angle sensing device is used to detect the angle between the main shaft and the vertical direction.

[0010] An embodiment of the present application also includes a detection method, which includes the above-mentioned drainage pipe structure integrity and damage load detection device.

[0011] The purpose of the embodiments of the present application is to provide a drainage pipe structure damage on-load detection device and detection method, which can be used as a prerequisite step for pipeline CCTV detection. There is no need to empty the drainage pipe and does not affect the normal operation of the drainage pipe. The operation is simple and the detection speed is fast. At the same time, the position of damage or misalignment of the drainage pipe can be quickly located, thereby improving the overall detection efficiency.

[0012] In some embodiments, one end of each first detection rod provided with the first angle sensing device is also provided with a first detection wheel, and the first detection wheel rolls on the inner wall of the drainage pipe.

[0013] In some embodiments, a first torsion spring is provided at the connection between the first fixing ring and each first detection rod. The first torsion spring is used to apply pressure to the first detection rod, so that the first detection wheel at the other end of the first detection rod can be in close contact with the inner wall of the drainage pipe, and at the same time it also stabilizes the main shaft.

[0014] In some embodiments, each second detection rod is provided with a second detection wheel at one end of the second angle sensing device, and the second detection wheel rolls on the inner wall of the drainage pipe.

[0015] In some embodiments, a second torsion spring is provided at the connection between the second fixing ring and each second detection rod. The second torsion spring is used to apply pressure to the second detection rod. The second detection wheel at the other end of the second detection rod is in close contact with the inner wall of the drainage pipe, and also stabilizes the main shaft.

[0016] In some embodiments, three first detection rods are provided, and the circumferential interval between any two adjacent first detection rods is 120°, so that the lines connecting the three first detection wheels at the ends of the three first detection rods form an equilateral triangle, thereby improving the stability of the main shaft during the movement in the drainage pipe.

[0017] In some embodiments, three second detection rods are provided, and the circumferential interval between any two adjacent second detection rods is 120°, so that the lines connecting the three second detection wheels at the ends of the three second detection rods form an equilateral triangle, thereby improving the stability of the main shaft during the movement in the drainage pipe.

[0018] In some embodiments, the three first detection rods and the three second detection rods are arranged in a circumferentially staggered manner to improve the stability of the main shaft during movement in the drainage pipe, while expanding the detection area of ​​the three first detection wheels and the three second detection wheels.

[0019] In some embodiments, the interval between any first detection rod on the first fixed ring and the circumferentially adjacent second detection rod on the second fixed ring is 60°, ensuring that the main shaft can move stably in the drainage pipe and improving the detection accuracy of the three first angle sensing devices and the three second angle sensing devices.

[0020] In some embodiments, the detection method comprises the following steps:

[0021] S1: Fixedly connect the traction rope to the traction ring;

[0022] S2: Make the axis of the main shaft approximately parallel to the axis of the drainage pipe to be inspected;

[0023] S3: placing the device into the drainage pipe to be inspected, and the three first inspection rods and the three second inspection rods are respectively unfolded under the action of the three first torsion springs and the second torsion springs, so that the three first inspection wheels and the three second inspection wheels are pressed against the inner wall of the drainage pipe, and at this time, the axis of the main shaft coincides with the axis of the drainage pipe to be inspected as much as possible;

[0024] S4: Pull the traction rope to drive the main shaft to move along the axis of the drainage pipe through the traction ring;

[0025] S5: During the movement of the spindle, when a first detection wheel or a second detection wheel encounters a pipe wall damage or misalignment, the corresponding first detection rod or the second detection rod generates an angular displacement, and the three first angle sensing devices and the three second angle sensing devices are in a state of recording the angle change between the vertical direction and the corresponding three first detection rods and the three corresponding second detection rods throughout the process, and the spindle angle sensing device records the angle change between the vertical direction and the spindle;

[0026] S6: By analyzing the angle data records collected by the three first angle sensing devices, the three second angle sensing devices and the main shaft angle sensing device, the location of the pipe wall damage or dislocation in the drainage pipe is located. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0028] Figure 1 It is an overall structural diagram of a drainage pipe structure integrity and damage load detection device provided in some embodiments of the present application;

[0029] Figure 2 It is an axial view of the main axis of a drainage pipe structure integrity and damage detection device provided by some embodiments of the present application;

[0030] Figure 3 is a partial enlarged view of a first fixing ring provided in some embodiments of the present application;

[0031] Figure 4 This is a partial enlarged view of the second fixing ring provided in some embodiments of the present application.

[0032] Explanation of the reference numerals in the accompanying drawings: 11, main shaft; 111, traction ring; 112, main shaft angle sensing device 112; 12, first detection part; 121, first fixed ring; 122, first detection rod; 123, first detection wheel; 124, first angle sensing device; 125, first torsion spring; 13, second detection part; 131, second fixed ring; 132, second detection rod; 133, second detection wheel; 134, second angle sensing device; 135, second torsion spring. DETAILED DESCRIPTION

[0033] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, each embodiment of the present application will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in each embodiment of the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented. The division of the following embodiments is for the convenience of description, and the specific implementation of the present application should not constitute any limitation, and the various embodiments can be combined with each other and referenced to each other without contradiction.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0035] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0036] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0037] Reference Figures 1 to 4 , the embodiments of the present application provide the following technical solutions:

[0038] like Figures 1 to 4 As shown, a traction ring 111 is provided at the front end of the main shaft 11, and a main shaft angle sensing device 112 is provided behind the traction ring; the first fixing ring 121 of the first detection part 12 is sleeved on the front half of the main shaft 11, and the second fixing ring 131 of the second detection part 13 is sleeved on the rear half of the main shaft 11.

[0039] The first fixed ring 121 is circumferentially provided with three first detection rods 122, and the interval between two adjacent first detection rods 122 is 120°. The first fixed ring 121 is also provided with a first torsion spring 125 which is rotatably connected to one end of each first detection rod 122. The three first detection rods 122 are circumferentially spaced 120° in pairs, and the other end of each first detection rod 122 is provided with a first detection wheel 123 and a first angle sensing device 124. The three first detection rods 122 are all inclined toward the rear end of the main shaft 11.

[0040] The second fixed ring 131 is circumferentially provided with three second detection rods 132, and the interval between two adjacent second detection rods 132 is 120°. The second fixed ring 131 is also provided with a second torsion spring 125 which is rotatably connected to one end of each second detection rod 132. The three second detection rods 132 are circumferentially spaced 120° in two or three directions, and the other end of each second detection rod 132 is provided with a second detection wheel 133 and a second angle sensing device 134. The three second detection rods 132 are all inclined toward the rear end of the main shaft 11.

[0041] The three first detection rods 122 and the three second detection rods 132 are arranged in a staggered manner in the circumferential direction, and a first detection rod 122 is spaced 60° from a circumferentially adjacent second detection rod 132 .

[0042] It should be noted that the outer edges of the three first detection wheels 123 are all set to conical surfaces, and the outer edges of the three second detection wheels 133 are all set to conical surfaces. The axes of the three first detection wheels 123 and the axes of the three second detection wheels 133 are as parallel as possible to the tangent of the cross-section at the inner wall of the drainage pipe in contact, so that when the main shaft 11 moves in the drainage pipe, the forward direction is as parallel as possible to the axis of the drainage pipe.

[0043] It should be noted that the three first detection rods 122 and the three second detection rods 132 respectively make the three first detection wheels 123 and the three second detection wheels 133 closely contact the inner wall of the drainage pipe through the action of the three first torsion springs 125 and the three second torsion springs 135, so that the main shaft 11 can maintain a stable moving posture when moving in the drainage pipe and cover the inner wall of the drainage pipe with a sufficiently large range.

[0044] It should be noted that the drainage pipe structure integrity detection device is equipped with an electronic data storage and display device, which is used to record the angle data of the three first angle sensing devices 124 and the three second angle sensing devices 134 and the angle data of the main shaft angle sensing device 112.

[0045] The method for detecting damage to the drainage pipe structure included in this embodiment includes the above-mentioned on-load detection device for damage to the drainage pipe structure, and adopts the following steps:

[0046] S1: Fixedly connect the traction rope to the traction ring 111;

[0047] S2: Make the axis of the main shaft 11 approximately parallel to the axis of the drainage pipe to be inspected;

[0048] S3: The device is placed in the drainage pipe to be inspected, and the three first inspection rods 122 and the three second inspection rods 132 are respectively unfolded under the action of the three first torsion springs 125 and the second torsion springs 135, so that the three first inspection wheels 123 and the three second inspection wheels 133 are pressed against the inner wall of the drainage pipe;

[0049] S4: Pull the traction rope to drive the main shaft 11 to move along the axial direction of the drainage pipe through the traction ring 111;

[0050] S5: During the movement of the spindle, when a first detection wheel 123 or a second detection wheel 133 encounters a pipe wall breakage or misalignment, the corresponding first detection rod 122 or the second detection rod 132 generates an angular displacement, and the three first angle sensing devices 124 and the three second angle sensing devices 134 are in a state of recording the angle change between the vertical direction and the corresponding three first detection rods 122 and the three corresponding second detection rods 132, and the spindle angle sensing device 112 is in a state of recording the angle change between the vertical direction and the spindle 11;

[0051] S6: By analyzing the angle data records collected by the three first angle sensing devices 124 and the three second angle sensing devices 134, the location of the pipe wall damage or dislocation in the drainage pipe is located.

[0052] It should be noted that: in actual use, the traction ring 111 is first fixedly connected to the other end outlet of the drainage pipe to be detected through a traction rope, and then the axis of the main shaft 11 is as parallel as possible to the axis of the drainage pipe to be detected, and then the three first detection rods 122 and the three second detection rods 132 are rotated to make the first detection rods 122 and the three second detection rods 132 buckle onto the main shaft 11, and the main shaft 11 is placed in the drainage pipe;

[0053] After placing the main shaft 11 into the drainage pipe to be inspected, the three first inspection rods 122 and the three second inspection rods 132 are loosened, the three first inspection rods 122 are opened under the action of the three first torsion springs 125, and the three first inspection wheels 1123 are respectively pressed against the inner wall of the drainage pipe to be inspected under the drive of the three first inspection rods 122. At the same time, the three second inspection rods 132 are opened under the action of the three second torsion springs 135, and the three second inspection wheels 133 are respectively pressed against the inner wall of the drainage pipe to be inspected under the drive of the three second inspection rods 132. At this time, the axis of the main shaft 11 is as close to or as parallel to the axis of the drainage pipe to be inspected as possible under the action of the three first inspection rods 122 and the three second inspection rods 132.

[0054] The main shaft angle sensing device 112, the three first angle sensing devices 124 and the three second angle sensing devices 134 are all connected to the electronic data storage and display device. The main shaft angle sensing device 112, the three first angle sensing devices 124 and the three second angle sensing devices 134 are in a real-time recording state. Then, the traction rope is pulled at a uniform speed. The traction rope drives the main shaft 11 to move at a uniform speed in the drainage pipe through the traction ring 111. The main shaft 11 drives the three first detection rods 122 and the three second detection rods 132 to move in the drainage pipe through the first fixing ring 121 and the second fixing ring 131 respectively. The three first detection rods 122 drive the three first detection wheels 123 to roll along the inner wall of the drainage pipe. The second detection rod 132 drives the three second detection wheels 133 to roll along the inner wall of the drainage pipe. When a first detection wheel 122 or a second detection wheel 132 encounters damage or misalignment on the inner wall of the drainage pipe, the corresponding first detection wheel 123 or the second detection wheel 133 will change its path, driving the corresponding first detection rod 122 or the second detection rod 132 to rotate. At this time, the corresponding first angle sensing device 124 or the second angle sensing device 134 will record the angular displacement of the first detection rod 122 or the second detection rod 132 at this time, and the spindle angle sensing device 112 will record the angular displacement of the spindle at this time. When the front end of the spindle 11 extends out of the detected drainage pipe, the detection is completed;

[0055] The above steps can be used as an auxiliary method before CCTV detection. By analyzing the angle change data collected by the main shaft angle sensing device 112, the three first angle sensing devices 124 and the three second angle sensing devices 134 recorded in the electronic data storage and display device, the condition of the inner wall of the drainage pipe can be judged. If the angle change data collected by the main shaft angle sensing device 112, the three first angle sensing devices 124 and the three second angle sensing devices 134 are all normal, CCTV detection is not required. If the angle change data collected by the main shaft angle sensing device 112, the three first angle sensing devices 124 and the three second angle sensing devices 134 are abnormal, CCTV is used for the next step of detection, which can quickly locate the data abnormal point on the inner wall of the drainage pipe, and then directly locate the data abnormal point on the inner wall of the drainage pipe for on-site inspection or processing.

[0056] When using the drainage pipe structure damage on-load detection device and detection method, it is only necessary to put the device into one end of the drainage pipe and pull the device out from the other end of the drainage pipe by pulling the rope. There is no need to empty the drainage pipe, and the normal operation of the drainage pipe is not affected. The operation is simple and the detection speed is fast. At the same time, the position of damage or dislocation of the drainage pipe can be quickly located, thereby improving the overall detection efficiency.

[0057] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present application, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present application.

Claims

1. A drainage pipe structure damage detection device, characterized in that: It includes a main shaft and a traction ring arranged at the front end of the main shaft, the main shaft is also provided with a first detection part and a second detection part, the first detection part and the second detection part are respectively arranged at the front half and the rear half of the main shaft; The first detection part comprises a first fixing ring and a plurality of first detection rods circumferentially arranged on the first fixing ring, one end of each of the first detection rods is provided with a first angle sensing device, and the first angle sensing device is used to detect the angle between the first detection rod and the vertical direction; The second detection part comprises a second fixing ring and a plurality of detection rods circumferentially arranged on the second fixing ring, one end of each of the detection rods is provided with a second angle sensing device, and the second angle sensing device is used to detect the angle between the second detection rod and the vertical direction; The main shaft is also provided with a main shaft angle sensing device, and the main shaft angle sensing device is used to detect the angle between the main shaft and the vertical direction.

2. A drainage pipe structure integrity detection device according to claim 1, characterized in that: Each of the first detection rods is also provided with a first detection wheel at one end where the first angle sensing device is provided.

3. A drainage pipe structure integrity detection device according to claim 2, characterized in that: A first torsion spring is provided at a connection point between the first fixing ring and each of the first detection rods.

4. A drainage pipe structure integrity detection device according to claim 3, characterized in that: Each of the second detection rods is also provided with a second detection wheel at one end where the second angle sensing device is provided.

5. A drainage pipe structure integrity detection device according to claim 4, characterized in that: A second torsion spring is provided at a connection point between the second fixing ring and each second detection rod.

6. A drainage pipe structure integrity detection device according to claim 5, characterized in that: Three first detection rods are provided, and the circumferential interval between any two adjacent first detection rods is 120°.

7. A drainage pipe structure integrity detection device according to claim 6, characterized in that: Three second detection rods are provided, and the circumferential interval between any two adjacent second detection rods is 120°.

8. A drainage pipe structure integrity detection device according to claim 7, characterized in that: The three first detection rods and the three second detection rods are arranged in a staggered manner in the circumferential direction.

9. A drainage pipe structure integrity detection device according to claim 7, characterized in that: The interval between any of the first detection rods on the first fixing ring and the circumferentially adjacent second detection rods on the second fixing ring is 60°.

10. A method for detecting damage to a drainage pipe structure under load, using the device for detecting damage to a drainage pipe structure under load as claimed in claim 9, comprising the following steps: S1: Fixedly connecting the traction rope to the traction ring; S2: aligning the axis of the main shaft approximately parallel to the axis of the drainage pipe to be inspected; S3: placing the device into the drainage pipe to be inspected, and the three first inspection rods and the three second inspection rods are respectively unfolded under the action of the three first torsion springs and the second torsion springs, so that the three first inspection wheels and the three second inspection wheels are pressed against the inner wall of the drainage pipe; S4: Pull the traction rope to drive the main shaft to move along the axis of the drainage pipe through the traction ring; S5: During the movement of the spindle, when one of the first detection wheels or one of the second detection wheels encounters a pipe wall damage or misalignment, the corresponding first detection rod or the second detection rod generates an angular displacement, and the three first angle sensing devices and the three second angle sensing devices are in a state of recording the angle change between the vertical direction and the corresponding three first detection rods and the three corresponding second detection rods, and the spindle angle sensing device is in a state of recording the angle change between the vertical direction and the spindle; S6: Locate the location of the pipe wall damage or dislocation in the drainage pipe by analyzing the angle data records collected by the three first angle sensing devices, the three second angle sensing devices and the main shaft angle sensing device.

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